package top.likeqc.config;

import org.springframework.security.authentication.AuthenticationManager;
import top.likeqc.security.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired LoginFailureHandler loginFailureHandler;

    @Autowired LoginSuccessHandler loginSuccessHandler;

    @Autowired CaptchaFilter captchaFilter;

    @Autowired JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;

    @Autowired JwtAccessDeniedHandler jwtAccessDeniedHandler;

    @Autowired UserDetailServiceImpl userDetailService;

    @Autowired JwtLogoutSuccessHandler jwtLogoutSuccessHandler;

    @Bean
    JwtAuthenticationFilter jwtAuthenticationFilter() throws Exception {
        AuthenticationManager authenticationManager = authenticationManager();
        JwtAuthenticationFilter jwtAuthenticationFilter = new JwtAuthenticationFilter(authenticationManager);
        return jwtAuthenticationFilter;
    }
    
    @Bean
    BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

    private static final String[] URL_WHITELIST = {"/login", "/logout", "/captcha", "/favicon.ico"};
    
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        
        http.cors().and().csrf().disable()
                
                // 登录配置
                .formLogin()
                .successHandler(loginSuccessHandler)
                .failureHandler(loginFailureHandler)
                
                // 退出
                .and()
                .logout()
                .logoutSuccessHandler(jwtLogoutSuccessHandler)
                
                // 禁用session
                .and()
                .sessionManagement()
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                
                // 配置拦截规则
                .and()
                .authorizeRequests()
                .antMatchers(URL_WHITELIST).permitAll()
                .anyRequest().authenticated()
                
                // 异常处理器
                .and()
                .exceptionHandling()
                .authenticationEntryPoint(jwtAuthenticationEntryPoint)
                .accessDeniedHandler(jwtAccessDeniedHandler)
                
                // 配置自定义的过滤器
                .and()
                .addFilter(jwtAuthenticationFilter())
                .addFilterBefore(captchaFilter, UsernamePasswordAuthenticationFilter.class)
        
        ;
        
    }
    
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailService);
    }
}
